/Engine/Plugins/Developer/Concert/ConcertUI/ConcertSharedSlate/Source/ConcertSharedSlate/Public/Session/Activity/IConcertReflectionDataProvider.h
Called just beforeSUndoHistoryDetails::SetSelectedTransaction. Injects the related property data saved in the activity.
void SetTransactionContext ( const [FConcertTransactionEventBase](API\Plugins\ConcertSyncCore\FConcertTransactionEventBase) & InTransaction )